A laptop cooler is also called a notebook cooler or cooler pad.It is basically an accessory for laptop computers which would help in reducing their operating temperature. Normally used when the laptop's fan device is unable to sufficiently cool the laptop, a cooling pad houses its own fans, usually numbering two or three, and rests beneath the laptop.

Some coolers are designed to draw heat from the underside of the computer and others work in the opposite way by blowing cool air towards the machine. The fan speed can be adjusted manually on certain models to vary the rate of airflow according to temperature and it ranges from 1800 RPM to 2800 RPM. Some laptop coolers allow the user to adjust the fan speed.

Though may cooler pads support the use of a power adapter, they typically run on power through one of the laptop's USB ports. Many cooler pads therefore compensate with a built-in USB hub. 

For example iLap is a versatile stand that keeps your laptop cool, and at the same time, lets you work comfortably on your lap as well as your desk. Designed to match the Apple MacBook Pro and Powerbooks, this cooler is made of alluminium with sand-blasted and silver anodized finish. It is also suitable for other laptops it comes in 12 inch, 13 inch widescreen, 14 inch, 15 inch, 15 inch widescreen and 17 inch widescreen.

There are numerous reasons why we should consider getting some sort of cooling solution for our notebook computer.

For requiring one of fancy laptop coolers with extra USB ports and all kinds of bells & whistles, we should need to keep in mind some of the following points: 

Sturdy but lightweight platform designed to cool our laptop computer

Equipped with 4 quiet but powerful fans

The fans are evenly placed to provide balanced cooling to all the "hot spots" on the bottom of our laptop

Powered by a little cable that plugs into any available USB port on our laptop computer

Speed dial lets us control the speed of the fans

On/Off button lets us manually power down the Quadcooler

LED indicator light lets the user know when the fans are running

Compatible with most laptop or notebook computers

Thin enough to pack alongwith laptop or notebook computer.